by Binder, Carl, Watkins, Cathy L.
Published in Performance improvement quarterly (2013)

by Watkins, C L, Pack-Teixeira, L, Howard, J S
Published in The analysis of verbal behavior (01.01.1989)

by Barrett, B H, Beck, R, Binder, C, Cook, D A, Engelmann, S, Greer, R D, Kyrklund, S J, Johnson, K R, Maloney, M, McCorkle, N, Vargas, J S, Watkins, C L
Published in The Behavior analyst (01.01.1991)